Batton Bone (バットンボーン,Battonbōn?) is a common enemy Mechaniloid appearing in the Mega Man X series that is the successor of the Bubble Bat from the original Mega Man series. They behave pretty much like their predecessor, mainly acting as aerial obstacles and inflicting damage if physical contact is made. The only difference is that they can be damaged even while hanging inactive upside down.

Skelebat, known as Batton Bone in Japan, is a variety from Mega Man X7 that appears in Tornado Tonion's Radio Tower stage and Crimson Palace. If Axl uses his Copy Shot on them, he gains the ability to summon one Skelebat to assist him.

Bat Bone, known as Batton Bone in Japan, is a variety from Mega Man X: Command Mission that appears in the Lagrano Ruins. They initially only observe the battles they appear in, but will attack with sound waves when one ally is destroyed. Run away in its third turn without taking damage. The message "When you face many enemies, use the R2 [Action Trigger]" only appear when X has lv 1 or lv 2 and face in battle at least 2 Bat Bone.

Bat Bone is also one of the Mechaniloids that can be deployed after it is found in the Northwest Division of the Gimialla Mine.

Batfighter, known as Batton Eater (バットンイーター,Battonītā?) in Japan, is another variety from Mega Man X: Command Mission with red wings and green eyes that appears in the Gimialla Mine. Unlike the Bat Bone, the Batfighter is more aggressive and attacks with bites that drain energy, recovering its health. It can also cause Berserk status.